The crossword solutions for the term BYGONE DAYS, IN DAYS GONE BY are ELD, which stands for 'ELDERLY'. This term is used to refer to people who are ELDERLY or of advanced age. It is often used to describe those who have lived through a long period of time and have seen many changes in their lifetime. Bygone days, in days gone by, refers to a time in the past that has since passed and is no longer present. It is often used to refer to a time of nostalgia and fond memories.